Studies on Benzochromones. IX. Syntheses of Hydroxyl Derivatives of 2-Methyl-5, 6-benzochromone and 2-Methyl-3-acetyl-5, 6-benzochromone
作者:Akira Ueno、Seigo Fukushima
DOI:10.1248/cpb.14.129
日期:——
Syntheses of hydroxyl derivatives of 2-methyl-5, 6-bezochromone were investigated, and following benzochromone derivatives were obtained together with related compounds, and physical and chemical properties of these chromones were characterized : 2-Methyl-8-methoxy-5, 6-benzochromone (IV), 2-methyl-7-methoxy-5, 6-benzochromone (X), 2-methyl-7, 8-dimethoxy-5, 6-benzochromone (XIV), 2-methyl-3-acetyl-8-methoxy-5, 6-benzochromone (XXV), 2-methyl-3-acetyl-7-methoxy-5, 6-benzochromone (XXII), and 2-methyl-3-acetyl-7, 8-dimethoxy-5, 6-benzochromone (XXIII). Hydroxylation of 2-methyl-8-hydroxy-5, 6-benzochromone (III) or 2-methyl-7-hydroxy-5, 6-benzochromone (V) gave 2-methyl-7, 8-dihydroxy-5, 6-benzochromone (XX) from both.
研究了 2-甲基-5, 6-苯并吡喃酮羟基衍生物的合成,得到了以下苯并吡喃酮衍生物及相关化合物,并对这些色酮的物理和化学性质进行了表征:2-Methyl-8-methoxy-5, 6-benzochromone (IV), 2-Methyl-7-methoxy-5, 6-benzochromone (X), 2-Methyl-7, 8-dimethoxy-5, 6-benzochromone (XIV), 2-Methyl-3-acetyl-8-methoxy-5、6-苯并色酮(XXV)、2-甲基-3-乙酰基-7-甲氧基-5,6-苯并色酮(XXII)和 2-甲基-3-乙酰基-7,8-二甲氧基-5,6-苯并色酮(XXIII)。将 2-甲基-8-羟基-5,6-苯并二氢吡喃酮(III)或 2-甲基-7-羟基-5,6-苯并二氢吡喃酮(V)进行羟基化处理,可得到 2-甲基-7,8-二羟基-5,6-苯并二氢吡喃酮(XX)。